yeah i'm gonna have to agree w/ xenium.
what size are the "fan slots" if they're 120mm compared to 80mm then you wouldn't need 6, you could get away w/ only 4 easily. (i can't get the link to work for me)
if you want a quieter computer then you can invest a little more more for quieter fans.
Antec NeoPower 650W
Intel Core 2 Duo E8400 (w/ Arctic Freezer 7)
4GB DDR2-1000 G.Skill
Sapphire x1950 Pro 512mb (w/ V700)
250GB, 500GB and 1.5TB Seagate Barracudas (2.25TB total)
Fatal1ty XtremeGamer sound card *** generic TV tuner
Xclio 3060 case *** HannsG 22" monitor
XP Pro / Ubuntu 7.10 *** Razer Copperhead and Tarantula